欧美日韩国产精品观看_日韩无码操逼色网视频_99福利国产在线_黄色av激情五月天在线_亚洲国产中文91精品在线_亚洲黄色午夜福利_最新流露出of高能预警CDwant_亚洲激情视频美女_国产视频91久久精品91廣大網友最新影片_日韩成人激情综合网

In modern medical, how to collect blood become more and more improvement, which from the single collection become to vacutainer collection, now with the use in clinic the vacuum tube blood collection become the main.

At the clinic use, main for blood test and kinds of blood cell culture. In the finished tubes there are EDTA and other medical to prevent blood on wall of tube, and the EDTA can stop blood congeal.

With this kind blood collection device use in clinic which help a lot in cell study, include the blood cell test and analyze, when collect the blood in this kind tube, it can keep blood in activity for long time.

Also the medical add into vacuum tube can keep long time of the effective of the medicine, when blood into the tube can reacted fast and sufficient.